I am struggling to determine if this motor will be compatible with the stepper motor HAT. It is a NEMA 23, 5Volt 1.8 Amp motor with a phase resistance of 2.75 ohms. The voltage is low for the HAT so I was planning on using a 12v to 5v step down between the HAT and the motor. Is this possible?
https://www.amazon.com/STEPPERONLINE-Cu ... ast_sto_dp
Adafruit DC & Stepper Motor HAT for Raspberry Pi - Motor Compatability
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- nickkarl
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Re: Adafruit DC & Stepper Motor HAT for Raspberry Pi - Motor Compatability
That motor is not compatible. It was designed for use with a current limiting 'chopper' type driver. the Motor HAT does not have current limiting.
https://learn.adafruit.com/all-about-st ... he-stepper
Stepper motor specs don't always mean what they appear to mean. Especially the voltage rating. These motors are absolutely not intended for operation with a 5v supply. They would never achieve the rated torque if operated with a 5v supply. Most people will be running those motors with a supply voltage in the 24v-48v range - but with a current limiting driver that 'chops' the current at 1.8 Amps. The link above explains this in more detail.
https://learn.adafruit.com/all-about-st ... he-stepper
Stepper motor specs don't always mean what they appear to mean. Especially the voltage rating. These motors are absolutely not intended for operation with a 5v supply. They would never achieve the rated torque if operated with a 5v supply. Most people will be running those motors with a supply voltage in the 24v-48v range - but with a current limiting driver that 'chops' the current at 1.8 Amps. The link above explains this in more detail.
- nickkarl
- Posts: 2
- Joined: Thu Dec 08, 2022 7:23 pm
Re: Adafruit DC & Stepper Motor HAT for Raspberry Pi - Motor Compatability
Thanks for the help! Could a chopper driver be used in conjunction with HATs on one raspberry pi? I am trying to operate 2 different types of stepper motors off of one raspberry pi. I also have a power supply with multiple outputs so the achieving higher voltage requirements of this motor (24-48v) is not an issue.
- adafruit_support_bill
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- Joined: Sat Feb 07, 2009 10:11 am
Re: Adafruit DC & Stepper Motor HAT for Raspberry Pi - Motor Compatability
www.pololu.com has a good selection of current-limiting stepper driver boards. Most of them use a simple step & direction interface, so you will just need 2 GPIO pins to control them:
https://www.pololu.com/category/120/ste ... or-drivers
They also have some more sophisticated driver boards that can be connected via USB or I2C: https://www.pololu.com/category/212/tic ... ontrollers
https://www.pololu.com/category/120/ste ... or-drivers
They also have some more sophisticated driver boards that can be connected via USB or I2C: https://www.pololu.com/category/212/tic ... ontrollers
Forum rules
Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/
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